Answer to Question #153324 in Physical Chemistry for Frikang Evangeline

Question

The elements of period 2 of the periodic table (Li to Ne) show periodic trend in their properties

How do the following properties vary across the period (Li to Ne) ? Explain in each case

A : Atomic structure

Explanation

B : First ionisation energy

Explanation

Answer 1

A) when we move left to right Atomic structure (Size) [decreases] periodic 2.

Explanation:- If we move left to right effective nuclear change increases, that's why size decreases.

B) First ionization energy of period 2 [increases] left to right in periodic table

Explanation: Left to right atomic mass decreases hecne ionization energy increases.